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Debian DSA-2475-1 : openssl - integer underflow

medium Nessus Plugin ID 59183

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Synopsis

The remote Debian host is missing a security-related update.

Description

It was discovered that openssl did not correctly handle explicit Initialization Vectors for CBC encryption modes, as used in TLS 1.1, 1.2, and DTLS. An incorrect calculation would lead to an integer underflow and incorrect memory access, causing denial of service (application crash.)

Solution

Upgrade the openssl packages.

For the stable distribution (squeeze), this problem has been fixed in version 0.9.8o-4squeeze13.

See Also

https://packages.debian.org/source/squeeze/openssl

https://www.debian.org/security/2012/dsa-2475

Plugin Details

Severity: Medium

ID: 59183

File Name: debian_DSA-2475.nasl

Version: 1.9

Type: local

Agent: unix

Published: 5/18/2012

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openssl, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/17/2012

Reference Information

CVE: CVE-2012-2333

BID: 53476

DSA: 2475